package com.example.origin.advice.config;

import com.example.origin.advice.constants.CommonConstants;
import com.example.origin.advice.entity.ResponseResult;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

/**
 * @author yutao.zhang
 * @create 2023-07-25 16:45
 **/
@RestControllerAdvice(basePackages = CommonConstants.BASE_PACKAGES)
public class GlobalResponseAdvice implements ResponseBodyAdvice<Object> {
    @Override
    public boolean supports(MethodParameter returnType, Class converterType) {
        return AbstractJackson2HttpMessageConverter.class.isAssignableFrom(converterType);
    }

    @Override
    public Object beforeBodyWrite(Object body, MethodParameter returnType, MediaType selectedContentType, Class selectedConverterType, ServerHttpRequest request, ServerHttpResponse response) {
        return wrap(body);
    }

    private Object wrap(Object body) {
        if (body == null) {
            return body;
        } else if (body instanceof ResponseResult) {
            return body;
        } else if (body instanceof Throwable) {
            return body;
        }
        return ResponseResult.ok(body);
    }

}
